[greenstone-users] Tiff to jpeg

I was aware of Greenstone for long time now but only recently started looking at it in more detail. I couldn't find a clear answer to my question anywhere and decided to post it here. Apologies if this is something very obvious to everyone except myself.

The problem is:I would like Greenstone to create jpeg derivatives for on-line delivery (and display them in the collection) from the original tiff files. Is this possible?